#1  
25th September 2012, 08:07 PM
ntsikelelo
 
Join Date: Sep 2012
Posts: 2

Where to get study tips for N2?


any one who have study tips for N2? email them to [email protected] please




  #2  
18th August 2015, 11:49 AM
BHANBHORI
Senior Member+++++
 
Join Date: Apr 2015
Posts: 11,617
Default Re: Where to get study tips for N2?

Here you can get the study tips for N2 as given below::::::::::::>>>>>>>>
  • Solving the Numerical questions with accuracy as well as quickly is asked in most of the competitive, entrance and qualifying examinations.
  • To solve them quickly you should practice more and more.
  • Try to solve model Numerical question papers, they will help you in improving your speed.

==> Short tricks to solve Numerical problems
  1. 1 + 2 + 3 + 4 + 5 + + n = n(n + 1)/2
  2. (13 + 23 + 33 + ..... + n3) = (n(n + 1)/ 2)2
  3. (12 + 22 + 32 + ..... + n2) = n ( n + 1 ) (2n + 1) / 6
  4. Sum of first n odd numbers = n2
  5. Sum of first n even numbers = n (n + 1)
  6. (a + b)n = an + (nC1)an-1b + (nC2)an-2b2 + + (nCn-1)abn-1 + bn
  7. (a - b)2 = (a2 + b2 - 2ab)
  8. (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca)
  9. (a3 + b3) = (a + b)(a2 - ab + b2)
Do you have any question? or have anything to say?



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